CN217085358U

CN217085358U - Seabed branching device

Info

Publication number: CN217085358U
Application number: CN202220982855.9U
Authority: CN
Inventors: 黄强强; 李剑; 朱宇; 杨成
Original assignee: Fenghuo Ocean Network Equipment Co ltd; Fiberhome Telecommunication Technologies Co Ltd
Current assignee: Fenghuo Ocean Network Equipment Co ltd; Fiberhome Telecommunication Technologies Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-07-29
Anticipated expiration: 2032-04-25

Abstract

The utility model relates to a submarine optical cable does not have relay communication system technical field, concretely relates to submarine splitter, this submarine splitter, include: the cable connector comprises an inner sleeve assembly, a heat-shrinkable sleeve and an outer sleeve assembly, wherein one end of the inner sleeve assembly is used for being connected with a main cable head, and the other end of the inner sleeve assembly is used for being connected with two branch cable heads; the heat-shrinkable sleeve is used for wrapping the outer sides of the inner sleeve component, the main cable head and the branch cable heads; the outer sleeve assembly is sleeved on the outer side of the heat-shrinkable sleeve. The sealing structure can solve the problems that in the prior art, a sealing ring or an injection molding process is usually adopted to realize sealing, but the injection molding process is adopted to realize complex structure and complex integrated assembly, time and labor are wasted, and the sealing requirement of a deep water area is difficult to meet by adopting a sealing ring sealing mode.

Description

Seabed branching device

Technical Field

The utility model relates to a submarine optical cable does not have relay communication system technical field, concretely relates to submarine splitter.

Background

The submarine passive splitter (BU) is mainly applied to submarine optical cable unrepeatered communication systems, and plays a main role in the systems in the following two aspects: 1) used for the connectivity between trunk route and branch route; 2) the reasonable distribution of the large-capacity optical fibers is realized, and the requirement of multi-end access networking is met. The working environment of the seabed passive branch device (BU) is positioned on the surface of the seabed environment or is buried below 1.5 meters on the surface of the seabed.

In the prior art, the submarine branching device used in the deepwater area has the following disadvantages: the working environment of the subsea splitter is located on the seabed, and high sealing performance is required. At present, a seabed splitter needs to meet the requirement of an over-embedded plough during seabed construction, if the size is too large, the product laying process is difficult, structures such as a bending limiter and the like need to be additionally designed, and the structure size is larger due to the adoption of the design, and the additional cost is increased.

In addition, the sealing structure of the subsea splitter usually adopts a sealing ring or an injection molding process to realize sealing, the sealing mode adopting the sealing ring is difficult to meet the sealing requirement of a deepwater area, and the sealing mode adopting the injection molding process has a complex structure and is time-consuming and labor-consuming in an integrated assembly process.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the utility model aims to provide a submarine splitter can solve among the prior art submarine splitter seal structure and adopt the sealing washer usually or the technology of moulding plastics to realize sealing, but adopts the complicated integrated assembly of injection moulding process product structure to waste time and energy, adopts the sealed mode of sealing washer to be difficult to satisfy the regional problem of sealed requirement of deep water.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the utility model provides a seabed branching device, a serial communication port, include:

one end of the inner sleeve assembly is used for being connected with the main cable head, and the other end of the inner sleeve assembly is used for being connected with the two branch cable heads;

the heat-shrinkable sleeve is used for wrapping the outer sides of the inner sleeve assembly, the main cable head and the branch cable heads;

and the outer sleeve assembly is sleeved outside the heat-shrinkable sleeve.

In some alternatives, the inner sleeve assembly comprises:

the inner sleeve connecting piece is used for being sleeved outside the two branch cable heads;

and one end of the inner steel cylinder is connected with the inner sleeve connecting piece, and the other end of the inner steel cylinder is sleeved outside the main cable head.

In some optional schemes, the inner sleeve connecting piece is connected with an inner steel cylinder, and the inner steel cylinder is sleeved outside the inner sleeve connecting piece and connected with the inner steel cylinder through a screw.

In some alternatives, the heat shrink tubing comprises:

the branch end heat shrink tube is used for wrapping the inner sleeve connecting piece and the two branch cable heads;

and the main cable end heat-shrinkable tube is used for wrapping the outer sides of the inner steel cylinder and the main cable head and is overlapped with the branch end heat-shrinkable tube part.

In some alternatives, a branching assembly is provided within the inner sleeve assembly for connecting the main cable optical fiber with two branch cable optical fibers.

In some alternatives, the branching component comprises:

the fiber coiling piece is used for coiling a main cable optical fiber, and one end of the fiber coiling piece is connected with the main cable head;

and the branch piece comprises a main cable end and two branch ends, the main cable end is connected with the other end of the fiber coiling piece, and the two branch ends are used for being connected with the branch cable head.

In some optional schemes, the fiber coiling piece is provided with spaced fiber coiling holes in the length direction.

In some optional schemes, a branch optical fiber groove is arranged on the branch piece.

In some optional schemes, the method further comprises the following steps:

the main cable outer armor component and the main cable buffer piece are connected with each other and used for being sleeved on a main cable, and the main cable outer armor component and the outer sleeve component are positioned at the end part of the main cable head and connected with each other;

the outer armor components of two sets of branch cables and branch cable buffer parts which are connected with each other are used for being sleeved on the two branch cables, and the two outer armor components of the branch cables are connected with the end parts of the outer sleeve components positioned at the two branch cable heads.

In some optional schemes, the outer sleeve assembly comprises an outer sleeve fixing piece and an outer steel sleeve, wherein one end of the outer sleeve fixing piece is connected with each other, the other end of the outer steel sleeve is connected with the main cable outer armor assembly, and the other end of the outer sleeve fixing piece is connected with the two branch cable outer armor assemblies.

Compared with the prior art, the utility model has the advantages of: the heat-shrinkable sleeve is sleeved outside the inner sleeve component, the main cable head and the branch cable head, and the inner sleeve component, the main cable head and the branch cable head are wrapped together in a heat-shrinkable mode to play a role in sealing. The main cable optical fiber and the two branch cable optical fibers are connected in the inner sleeve component, the inner sleeve component plays a role in supporting and protecting, and the outer sleeve component is sleeved outside the heat-shrinkable sleeve to play a role in protecting the heat-shrinkable sleeve and play a role in supporting. The structure is simple, the size is small, and the requirements of passing through a hub and burying a plough are met; the installation process is simple, convenient and quick, the integration process can be simplified, and the product integration time is shortened.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a subsea splitter according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a branch assembly connected to a main cable head and a branch cable head according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating an inner sleeve connector mounted to a branch cable head according to an embodiment of the present invention;

FIG. 4 is a schematic view of an embodiment of the present invention with an inner sleeve assembly installed;

fig. 5 is a schematic structural view of a heat shrinkable tube at a main cable end in an embodiment of the present invention;

fig. 6 is a schematic structural view of a branch end heat shrinkable tube according to an embodiment of the present invention;

FIG. 7 is a schematic view of an embodiment of the present invention after installation of a heat shrinkable sleeve;

fig. 8 is a schematic structural diagram of an outer sleeve assembly according to an embodiment of the present invention.

In the figure: 1. an inner sleeve assembly; 11. an inner sleeve connecting piece; 12. an inner steel cylinder; 2. a main cable head; 3. a branch cable head; 4. heat-shrinkable tubing; 41. a branch end heat shrink tube; 42. a main cable end heat shrink tube; 5. an outer sleeve assembly; 51. a jacket fixing piece; 52. an outer steel cylinder; 6. a branching component; 61. Coiling the fiber piece; 62. a branching member; 71. a main cable outer armor component; 72. a main cable buffer; 81. a sub-cabled outer armor component; 82. a cable-supporting buffer member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The following describes an embodiment of the subsea splitter according to the present invention in further detail with reference to the drawings.

As shown in fig. 1, the present invention provides a subsea splitter, comprising: an inner sleeve assembly 1, a heat shrinkable sleeve 4 and an outer sleeve assembly 5.

One end of the inner sleeve component 1 is used for being connected with the main cable head 2, and the other end of the inner sleeve component is used for being connected with the two branch cable heads 3; the heat-shrinkable sleeve 4 is used for wrapping the outer sides of the inner sleeve component 1, the main cable head 2 and the branch cable heads 3; the outer sleeve assembly 5 is sleeved outside the heat-shrinkable sleeve 4.

When the submarine branching device is used, one end of the inner sleeve component 1 is connected with the main cable head 2, the other end of the inner sleeve component is connected with the two branch cable heads 3, then the heat-shrinkable sleeve 4 is sleeved on the outer sides of the inner sleeve component 1, the main cable head 2 and the branch cable heads 3, the inner sleeve component 1, the main cable head 2 and the branch cable heads 3 are wrapped together in a heat-shrinkable mode, and the sealing effect is achieved. The main cable optical fiber and the two branch cable optical fibers are connected in the inner sleeve component 1, the inner sleeve component 1 plays a role in supporting and protecting, and the outer sleeve component 5 is sleeved outside the heat-shrinkable sleeve 4 to play a role in protecting the heat-shrinkable sleeve 4 and play a role in supporting.

In some alternative embodiments, the inner sleeve assembly 1 comprises: an inner sleeve connecting piece 11 and an inner steel cylinder 12.

The inner sleeve connecting piece 11 is used for being sleeved outside the two branch cable heads 3; one end of the inner steel cylinder 12 is connected with the inner sleeve connecting piece 11, and the other end is sleeved outside the main cable head 2.

In this embodiment, the inner sleeve assembly 1 is sleeved on the main cable optical fiber and the two branch cable optical fibers for convenience, and two ends of the inner sleeve assembly are respectively connected with the main cable head 2 and the two branch cable heads 3. Therefore, the inner sleeve assembly 1 is designed into the inner sleeve connecting piece 11 and the inner steel cylinder 12 with the end parts detachably connected, the inner sleeve connecting piece 11 is firstly sleeved on part of the branch cable heads 3, the inner steel cylinder 12 is sleeved on part of the main cable heads 2, and after the main cable optical fibers and the two branch cable optical fibers are connected in the inner sleeve assembly 1, the end parts of the inner sleeve connecting piece 11 and the inner steel cylinder 12 are connected, so that the design is convenient to install.

In some alternative embodiments, the inner sleeve connecting member 11 is connected to the inner steel cylinder 12, and the inner steel cylinder 12 is sleeved outside the inner sleeve connecting member 11 and connected by a screw.

In this example, the inner sleeve connector 11 is sleeved on two partial branch cable heads 3 and connected by screws, the inner steel cylinder 12 is sleeved on the outer side of partial main cable head 2 and connected by screws, the joint of the inner steel cylinder 12 and the inner sleeve connector 11, and the inner steel cylinder 12 is sleeved on the outer side of the inner sleeve connector 11 and connected by screws. The connecting mode is simple in structure, the inner sleeve component 1 can be quickly connected with the main cable head 2 and the two branch cable heads 3, the heat-shrinkable sleeve 4 is sleeved on the outer sides of the inner sleeve component 1, the main cable head 2 and the branch cable heads 3, the inner sleeve component 1, the main cable head 2 and the branch cable heads 3 are wrapped together in a heat-shrinkable mode, the sealing effect is achieved, and meanwhile the operation efficiency is improved.

In some alternative embodiments, heat shrink 4 comprises: a branch end heat shrinkable tube 41 and a main cable end heat shrinkable tube 42. The branch end heat shrink tube 41 is used for wrapping the inner sleeve connecting piece 11 and the two branch cable heads 3; the main cable end heat shrinkable tube 42 is used for wrapping the outer sides of the inner steel cylinder 12 and the main cable head 2 and partially overlapping with the branch end heat shrinkable tube 41.

In the present embodiment, the heat shrinkable tube 4 is designed such that the branch end heat shrinkable tube 41 and the main cable end heat shrinkable tube 42 are partially overlapped at the joint, so that the installation is facilitated and the partial overlap ensures good sealability.

In some alternative embodiments, a branch assembly 6 is provided in the inner sleeve assembly 1 for connecting the main cable fiber with two branch cable fibers.

In this embodiment, one end of the branch assembly 6 is connected to the main cable head 2 in a form of snap connection, and the other end is connected to the two branch cable heads 3 in a form of snap connection. The main cable optical fiber is connected with the two branch cable optical fibers in the inner sleeve component 1, the inner sleeve component 1 and the outer sleeve component 5 realize support, the heat-shrinkable sleeve 4 realizes sealing of the joints of the inner sleeve component 1, the main cable head 2 and the branch cable heads 3, and the outer sleeve component 5 can protect the heat-shrinkable sleeve 4.

In some alternative embodiments, the branching assembly 6 comprises: a fiber coiling member 61 and a branching member 62. The fiber coiling part 61 is used for coiling the main cable optical fiber, and one end of the fiber coiling part is connected with the main cable head 2; the branch member 62 includes a main cable end connected to the other end of the fiber winding member 61 and two branch ends for connecting to the branch cable head 3.

In this embodiment, one end of the fiber coiling member 61 is connected with the main cable head 2 in a clamping manner for coiling the main cable fiber, and the main cable end of the branch member 62 is connected with the other end of the fiber coiling member 61 through a screw. The two branch ends are in smooth transition connection with the main cable end, are used for installing two branch cable optical fibers and are respectively connected with the branch cable heads 3 in a clamping mode, and the installing and connecting efficiency can be improved.

In some alternative embodiments, the fiber coiling member 61 is provided with spaced fiber coiling holes along its length. In this embodiment, the fiber coiling member 61 is provided with fiber coiling holes at intervals in the length direction, and the fiber capacity is larger than that of other structures under the same size, so that the requirement of large capacity on the fiber capacity is met.

In alternative embodiments, branching member 62 is provided with a branching fiber groove.

In this embodiment, the two branch ends are provided with branch fiber grooves extending to the main cable end for easy installation of the branch optical fibers.

In some optional embodiments, the subsea splitter further comprises: a group of main cable outer armor components 71 and main cable buffer components 72 which are connected with each other and used for being sleeved on a main cable, wherein the main cable outer armor components 71 and the outer sleeve components 5 are connected at the end part of the main cable head 2; the cable buffer device further comprises two groups of cable outer armor components 81 and cable buffer components 82 which are connected with each other and used for being sleeved on the two cables, wherein the two cable outer armor components 81 are connected with the outer sleeve component 5 and located at the end parts of the two branch cable heads 3.

In this embodiment, the outer armor components 71 of the main cable and the main cable buffer 72 which are connected with each other are sleeved on the main cable, the outer armor components 71 of the main cable and the outer sleeve component 5 are connected in a threaded connection mode, the outer armor components 81 and the outer cable buffer 82 of the two groups of connected branch cables are respectively sleeved on the two branch cables, the end portions of the outer armor components 81 of the two branch cables and the outer sleeve component 5 are also connected in a threaded mode, and the design is convenient to connect, so that the operation efficiency can be improved. The main cable buffer 72 and the branch cable buffer 82 are buffer components, and are used for improving the bending performance of the optical cable and preventing the submarine cable from being bent to an excessive extent to damage optical fibers in the submarine cable.

In some alternative embodiments, the outer sleeve assembly 5 includes an outer sleeve holder 51 and an outer steel cylinder 52 having one end connected to each other, the other end of the outer steel cylinder 52 being connected to the main cable outer sheath assembly 71, and the other end of the outer sleeve holder 51 being connected to the two branch cable outer sheath assemblies 81.

In this embodiment, the outer sleeve assembly 5 is designed as an outer sleeve holder 51 and an outer steel sleeve 52, which are connected to each other at their ends, for easy installation and function to protect the inner heat shrinkable sleeve 4.

In some alternative embodiments, both the inner and outer sleeve assemblies 1, 5 are steel. In this example, the inner sleeve assembly 1 and the outer sleeve assembly 5 are both made of steel, which can protect the internal structure.

The installation mode of the invention is as follows:

step 1: as shown in fig. 2, the main cable head 2 is connected to the fiber reel 61 by a clamp, two branch ends of the branch member 62 are connected to the two branch cable heads 3 by the clamp, and the other end of the fiber reel 61 is connected to the main cable end of the branch member 62 by a screw.

Step 2: as shown in fig. 3, the inner joint member 11 is mounted to the two branch cable heads 3 and fastened with a pin.

And step 3: as shown in fig. 4, the inner steel cylinder 12 is installed on the main cable head 2 and fastened by a pin, and the other end of the inner steel cylinder 12 is sleeved outside the inner sleeve connector 11 and connected by a screw.

And 4, step 4: as shown in fig. 5, 6 and 7, the main cable end heat-shrinkable tube 42 and the branch end heat-shrinkable tube 41 are respectively installed from the main cable end and the branch cable end, sleeved outside the inner steel cylinder 12, the main cable head 2, the inner sleeve connecting piece 11 and the two branch cable heads 3, and subjected to heat-shrinking treatment by using a tool, so as to achieve the sealing effect.

And 6: as shown in fig. 8, the outer steel cylinder 52 is installed from the optical fiber end of the main cable, the outer jacket fixture 51 is installed from the branch cable end, and is sleeved on the outer side of the heat shrinkable sleeve 4, and the outer steel cylinder 52 and the outer jacket fixture 51 are connected by screws.

Step 6: as shown in fig. 1, the main cable outer sheath assembly 71 and the main cable buffer 72 are attached together by a set screw, and the two sets of branch cable outer sheath assemblies 81 and the branch cable buffers 82 are also attached together by a set screw to form an outer sheath protecting member.

And 7: as shown in fig. 1, the main cable outer sheath assembly 71 and the main cable buffer member 72 are mounted on the branch cables, and two sets of the branch cable outer sheath assemblies 81 and the branch cable buffer members 82 are mounted on the two branch cables, respectively, wherein the main cable outer sheath assembly 71 is mounted on the outer steel cylinder 52 by screw connection, and the branch end outer sheath assembly 81 is mounted on the outer jacket fixture 51 by screw connection.

To sum up, the heat-shrinkable sleeve 4 is sleeved outside the inner sleeve component 1, the main cable head 2 and the branch cable heads 3, and the inner sleeve component 1, the main cable head 2 and the branch cable heads 3 are wrapped together in a heat-shrinkable mode to play a role in sealing. The main cable optical fiber and the two branch cable optical fibers are connected in the inner sleeve component 1, the inner sleeve component 1 plays a role in supporting and protecting, and the outer sleeve component 5 is sleeved outside the heat-shrinkable sleeve 4 to play a role in protecting the heat-shrinkable sleeve 4 and play a role in supporting. The structure is simple, the size is small, and the requirements of passing through a hub and burying a plough are met; the installation process is simple, convenient and quick, the integration process can be simplified, and the product integration time is shortened.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A subsea splitter, comprising:

the inner sleeve assembly (1) is used for connecting the main cable head (2) at one end and connecting the two branch cable heads (3) at the other end;

the heat-shrinkable sleeve (4) is used for wrapping the outer sides of the inner sleeve component (1), the main cable head (2) and the branch cable heads (3);

and the outer sleeve assembly (5) is sleeved on the outer side of the heat-shrinkable sleeve (4).

2. Subsea branching device according to claim 1, characterized in that the inner sleeve assembly (1) comprises:

the inner sleeve connecting piece (11) is sleeved on the outer sides of the two branch cable heads (3);

and one end of the inner steel cylinder (12) is connected with the inner sleeve connecting piece (11), and the other end of the inner steel cylinder is sleeved on the outer side of the main cable head (2).

3. The subsea splitter according to claim 2, characterized in that the inner sleeve connector (11) is connected to the inner steel cylinder (12), and the inner steel cylinder (12) is sleeved outside the inner sleeve connector (11) and connected by screws.

4. Subsea splitter according to claim 2, characterized in that the heat shrink (4) comprises:

the branch end heat shrink tube (41) is used for wrapping the inner sleeve connecting piece (11) and the two branch cable heads (3);

and the main cable end heat shrinkable tube (42) is used for wrapping the outer sides of the inner steel cylinder (12) and the main cable head (2) and partially overlapping with the branch end heat shrinkable tube (41).

5. Subsea splitter according to claim 1, characterized in that inside the inner sleeve assembly (1) a splitter assembly (6) is provided for connecting a main cable fibre with two branch cable fibres.

6. Subsea splitter according to claim 5, characterized in that the splitting assembly (6) comprises:

a fiber coiling part (61) for coiling a main cable optical fiber, wherein one end of the fiber coiling part is connected with the main cable head (2);

and the branch piece (62) comprises a main cable end and two branch ends, the main cable end is connected with the other end of the fiber coiling piece (61), and the two branch ends are used for being connected with the branch cable head (3).

7. The subsea splitter according to claim 6, characterized in that the fiber coils (61) are provided with spaced fiber coil holes in the length direction.

8. The subsea splitter according to claim 6, wherein the branching member (62) is provided with a branching fiber groove.

9. The subsea splitter of claim 1, further comprising:

the main cable outer armor component (71) and the main cable buffer piece (72) are connected with each other and used for being sleeved on a main cable, and the main cable outer armor component (71) is connected with the end part, located on the main cable head (2), of the outer sleeve component (5);

the cable buffer piece comprises two groups of cable outer armor components (81) and cable buffer pieces (82) which are connected with each other and used for being sleeved on the two cables, wherein the two cable outer armor components (81) are connected with the end parts of the two branch cable heads (3) of the outer sleeve component (5).

10. A subsea splitter as claimed in claim 9, in which the outer sleeve assembly (5) comprises an outer sleeve holder (51) and an outer steel sleeve (52) connected to each other at one end, the other end of the outer steel sleeve (52) being connected to the main cable outer sheath assembly (71), the other end of the outer sleeve holder (51) being connected to both of the sub cable outer sheath assemblies (81).